100%, futures was the beginning of it because it gave another channel for manipulation. I'm not sure it's so much for profit but perhaps just to subdue bitcoin, the chief of the futures exchange said that they would kill volatility in bitcoin and that seems to be what's happening.
Well maybe that's a good thing if we are to expect BTC to be a currency. Who would buy a pizza with BTC if they could get it for half price next week? So if that's to be the case, then let's thank them.